被动式超低能耗居住建筑新风热负荷计算方法研究  

Research on Calculation Method of Thermal Load of Fresh Air for Passive Residential Building with Ultra-low Energy Consumption

作　　者：吕燕捷 徐伟[2] 孙德宇[2] 王树刚[1] 

机构地区：[1]大连理工大学建设工程学部土木工程学院,辽宁大连116033 [2]中国建筑科学研究院建筑环节与节能研究院,北京100013

出　　处：《建筑科学》2015年第6期80-85,共6页Building Science

基　　金："十二五"国家科技支撑计划课题"实现更高建筑节能目标的可再生能源高效应用关键技术研究"(20140106110131114)

摘　　要：随着建筑气密性的不断提高,超低能耗建筑等高性能的建筑机械新风系统逐渐成为决定室内空气品质,影响建筑整体能耗水平的关键因素,其合理设计成为目前亟需深入研究的问题。本文在我国现行空气调节设计规范的基础上,考虑建筑气密性、热回收技术等对建筑新风热负荷的影响,针对严寒及寒冷地区冬季热回收装置存在霜冻、过度预热等问题,提出被动式超低能耗建筑新风系统热负荷及年累计新风热负荷计算方法。该法在计算新风系统热负荷的同时细化预热量的计算,有助于预热装置合理选型,及新风能耗的计算。此外本文还对采用不同室外参数对不同地区热负荷计算造成的误差影响进行分析比较,探讨不同温度运行控制策略对预热量及新风热负荷及年累计新风热负荷的影响。With the increasingly intensified air tightness of the ultra-low energy consumption buildings,the traditional fresh air thermal load calculation method cannot satisfy the design requirements of the ultra-low energy consumption buildings. Based on the related existing technical standards in China,this paper aims at the problems of frosting and excessive preheating found in the heat recovery devices in severe cold and cold regions,and thus proposes the calculation methods of the thermal load of fresh air system and the yearly accumulative thermal load of fresh air for the passive buildings with ultra-low energy consumption,with consideration to the impact of building air tightness and heat recovery technology on the fresh air thermal load. In addition to calculation of the fresh air thermal load,the method also details the calculation of preheating amount,which helps to select proper preheating devices and calculate the fresh air energy consumption. Besides,this paper analyzes and compares the errors caused by calculating thermal load in different regions by adopting different outdoor parameters,with a view to explore the influences of different temperature running control strategies on the preheating consumption,fresh air thermal load,and the yearly accumulative fresh air thermal load.

关 键 词：超低能耗建筑 建筑气密性 新风热负荷 热回收 预热量 

分 类 号：TU831.2[建筑科学—供热、供燃气、通风及空调工程]